Believe It or Not!

A list of Useful, Useless or simply Interesting facts on Proteins, Structures and what's around them, automatically updated by OCA, the browser and database for structure and function.

The most common ...
 * The most common Sources are Homo sapiens, present in 21,063 PDB structures and Escherichia coli, present in 8,447 PDB structures.
 * The most common Ligand is SO4, present in 8,821 PDB structures.
 * The most common Space group is P 21 21 21, present in 15,009 PDB structures.
 * The most common Chemical Element, after the common protein elements C,O,N,P,S is Zinc, found in 6,665 PDB structures.
 * The least common Chemical Elements are Indium (1ind), Neptunium (1yuh), Rhodium (2zur) and Vanadium (1qyl), found in 1 PDB structure each.

The most conspicuous ...
 * The PDB structure with the best resolution is 3nir, with 0.48 &Aring;.
 * The PDB structure with the worst resolution is 2tma, with 15.00 &Aring;.
 * The PDB structure with the shortest life is 2v4w with 11 days.
 * The PDB structure with the most models is 2hyn, with 184 models.
 * The PDB structure with the most related structures is 2xtt with 262 related structures.
 * The PDB structure with the longest chain is 3kgv with 4,128 amino acids.
 * The PDB structures with the shortest chain (greater than one residue) are 1a16, 1ahg, 1apg, 1b2m, 1cwp, 1d53, 1ddl, 1dn8, 1ehl, 1f0v, 1i8m, 1ijs, 1kqs, 1lgc, 1m6a, 1n38, 1oup, 1pek, 1pv4, 1pvo, 1q81, 1q82, 1rnb, 1uvk, 1xam, 207l, 279d, 2aig, 2dwl, 2dwm, 2ht1, 2htt, 2ok0, 2pjr, 2vrt, 3bfn, 3er9, 3ngz, 3nma, 3rec, 3tmn, 4pad with 2 residues each.
 * The PDB structures with the heaviest chain are 2vz8, 2vz9 with 272,251.98  each.
 * The PDB structure with the most ligands is 3arc with 19 ligands.
 * The PDB structure with the largest file is 2ku2 with 21.18M.
 * The PDB structure with the smallest file is 3rec with 2.6K.

Overall Statistics ... Updated by OCA on Wed Jul 13 11:21:04 2011
 * The mean PDB resolution is 2.15 &plusmn; 0.56 based on 64,891 X_Ray structures.
 * The mean PDB file is 171.56K &plusmn; 291.65K based on 74,428 files.
 * There is 1 structure file with 12 citations (1het) and 1 structure file with 9 citations (1dxr).